This mandala is commonly found in monasteries and retreat centers in the Mahasi Sayadaw tradition of Theravada Buddhist meditation. One such hangs in the entranceway at a monastery/retreat center in Lumbini, Nepal where I’ve practiced almost annually for many years. Over the years of glancing at it and sometimes taking time to study it, I’ve learned its lesson through practice. I’ve learned that when the mental factors of faith/confidence, energy/effort, mindfulness, concentration, wisdom with virtue are combined and balanced, many doors to spiritual insight can be opened. It takes a combination of all these mental factors with virtue in balance to open the door.